Dual valve



Oct. 14, 1924.

1,511,974 F. w. LINDEMANN DUAL VALVE Filed Aug. 16. 1923 2 Sheets-Sheet 1 II:- E

l g l I l l wum g/WJMAICH ZI/Mewa/ww e M w I I I $13 I I m Patented Oct. 14, 1924.

UNITED STATES PATENT OFFICE.

DUAL VALVE.

Application filed August 16, lees. Serial No. 657,742.

To all whom it may concern: Be it known that I, FREDERICK W. LINDE- MANN, a citizen of the United States, resid-. 'ing at St. Paul, in'the county of- Ramsey and State of Minnesota, have invented certain new and useful Improvements in Dual Valves: and I do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it'appertains' to make and use the same.

My invention relates to improvements in valves andthe present. disclosure is directed primarily'to onewhich is intended for fillmg washing machines of laundries, and one object is to rovide a device of the class set forth having a cold water valve, 2. hot water valve, and common operating means for the two valves which is movable in one manner to open either'one of said valves,

or movable in another manner to open both valves.

Another object is to provide a unique dash pot arrangement in connection with each of the valves to prevent them from hammering when closing.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and.cla1med, -.the description being supplemented by the accompanying drawings. 7

Figure 1 is anelevation of a valve constructed in accordance with my invention, applied to one end of a washlng machine.

-- Fig. 2 is an elevation partly in section.

as indicated by line 22 of Fig. 1;

. line 6-6 of Fig. 3.

the numeral 1 designates a suitable valve cas i havin a cold'water inlet 2, a hot water et 3, an a common outlet 4 adapted'to be;

F i :3 is a vertical sectional view on sub: stantially line 3-3 of Fig.- 2.

Fig. 4 is a sectional view at right angles tov Fig. 3 as indicated by line 44 thereof.

connected by a pipe 5 with a washing machine or other tank. The pipes'2 3 commumcate with'cylindrica ortions 6 of the casmg 1, said portions eing provided with removable valve seats 7 with which a pair of valves 8 co-act, said valves having stems 9 whose upper ends are suitably guided as indicated at 10, while their lower ends are provided with enlarged plungers 11 operable in dash pots 12 which are formed as parts of the casing 1 and are in the present disclosure, in downwardly spaced relation with the valves 8.-

Immediately. above I the plungers 11, I have shown collars 13 on the stems 9, and forks It on the end of a cross arm 15, are received betweensaid plungers and collars to loosely connect the ends of said arm with the valve stems. The center of .the cross arm 15 is provided with an opening 16 looselyreceiving the reduced upper end 17 of an operating shaft 18 which enters the casing 1 through a suitable stufling box 10. This shaft carries a pair of arcuate inclined cams 20to engage the lower edge of the cross arm 15, the cams being secured upon the shaft, and a coiled spring 21 normally holds said cross arm downwardly to close both valves 8 when the cams 20 are neutrally positioned. It will be seen however, that by turning the shaft 18 in one direction or the other, one orthe other of its cams 20 may be brought into engagement with the cross arm 15, thus producing opening of one or the other of. the valves 8, as will be seen by reference to Fig. 5. Furthermore, by

raising the shaft '18 with the cams either in a neutral position or in some other position to which they have been turned, the

cross arm is raised bodily and consequently both valves will be opened, thus, either hot water or cold'water, or a mixture of desired proportions, may be permitted to pass throughthe casing 1, to the washing machineor the like. i

For operating the cam carrying shaft 18 in the desired manner, I prefer to provide a hand lever 22 which is pivoted between its ends 'to the lower end of said shaft as indicated at '23, the inner end of this lever v be turned in the desired manner, and by pulling upwardly on said lever, said shaft will be raised. This lever preferably carries a suitable indicator 26 00-0 erable with an arcuate indicating plate 2 depending from the casing l, so that the operator can 7 soon as the water level rises-to the required extent, the float trips the latch 28 and the valve will automatically close, but due to provision of the'plungers 11 and dash pots invention as claimed, numerous changes may 12, no hammering will'take place, incidentto the closing operation.

From the foregoing, taken in connection with the accompanying drawings,-it will be seen that I have rovlded an exceptionally compact and deslrable valve arrangement for. carrying out the objects of the invention, and since excellent results may be obtained from the details disclosed, they may be followed if desired, but within the scope of the bemade.

I claim 1. A device of the class described compris ing a pair of spaced valves movable in the same direction for opening, a cross arm rockably connectedat its ends to said valves and having an opening between its ends,a rota table and axially movable shaft passing loosely through said opening, and cam means carried by said shaft and engaging said cross arm, said cam means being operative upon valves.

' tion of the shaft, and a lever pivoted to said extending portion of the shaft between its rotation of the shaft-to cant said cross arm and open one or the other of the valves and serving upon axial movement of the shaft to bodily move the cross arm and open both 2. A device of the-class described comprising a, valve containing casing, a valve operating shaft extending from said casing,

a curvedtrack carried by the casing in concentric .relation with the extending porends, one end of said lever beingengaged with said track. 1

3. A structure as specified in claim 2; top gether with a bracket arm carried by said track, and a latch for holding said shaft in valve-open position, said latch being mounted, on said bracket'arm. h i

prising a pair of spaced valves movable in the same direction for opening, a cross arm rockably connected at its e'nds'to said valves and having an opening between its ends, a rotatable and axially movable shaft'passing loosely through said opening, and means carried by said shaft and-engaging said cross 4.1x device bf the class described coma arm whereby the same is actuated toopen either or'bot-h of said valves.

5. A device of the class described, com prising a valve casing, a valve operatin shaft extending from said casing, a curve track carried by the casing in concentric relation with the extending portion of the shaft,

a lever pivoted to said extending. portion of the shaft between its ends one end of, said lever beingengaged with said track, a bracket arm carried by said track, a latch ivoted to said bracket arm for holding said shaft in valve-opening position. and means connected with said latch for automatically disengaging the same from saidshaft, whereby the" valves are permitted to close when the water machine hasreached a preinthe washing determined leve d a 6. 'A evice of the class described, comprising-a valve casing, a valve operating shaft extending from said casing, a curved track carried by the casingin concentric relation with the extending portion of the shaft, a lever pivotedfito said'extending portion of the shaft between its ends, one end of said lever being engaged with said track, a. bracket arm carried by said track, a latch pivotedto said bracket arm for holding said.

shaft in valve opening position, a float chamber in communication with the washing machine, a float within said chamber and connected with one arm of said latch whereby the latch is disengagedi'from said shaft and the valves permitted to close when thewater in the washing machine has reached a.

predetermined level. 7. A device ofthe ing a valve casing, a valve operating shaft extending from said casing, an extension on said casin havingthereo'n an arcuate in:

class d'esdribed compris dicating p ate, a curved track carried by said extension, a lever pivoted tosaid valve-operating shaft' and anindicatorcarried by said late on said extension of the casing,

In testimony whereof I 1 have hereunto aflixed my signature,

FREDERICK w.

lever and co operable ,with" the indicating. 

